The clinical picture of the depressed form of puerperal psychosis

The clinical features of 104 patients admitted to a mother and baby unit over a 5-year period with RDC diagnoses of depression or schizoaffective depression were studied by self-ratings, measurements of non-verbal behaviour from standardised videotaped interviews, and observer ratings based on multiple information sources. The hypothesis was tested that they included a large subset which represented the depressed form of a bipolar puerperal psychosis. It was deduced that these illnesses would start early in the puerperium, and would have some specific clinical features. A comparison of patients with onset of depression within 2 weeks of delivery with those with onset during pregnancy or much later in the postnatal period showed a number of significant differences. A discriminant function analysis using serial reclassification of atypical patients refined the early-onset group by the exclusion of about one third of the patients who had an atypical clinical picture; the patients who remained, who are considered to represent the depressed form of puerperal psychosis, showed less anger, less self-rated emotion and more animation than the other depressed patients.